Materials:Propeties and Changes

Question 1

Name the boiling point of in degrees celcius:
Pure Water -
Vinegar -
Liquid gold -

Answer 1

Pure water - 100
Vinegar - 118
Liquid gold - 2856

Question 2

What is Boiling Point

Answer 2

The boiling point is the temperature at which a liquid turns into a gas.

Question 3

What is Melting Point

Answer 3

The melting point of a substance is the temperature at which it changes from a solid to a liquid.

Question 4

State two differences between Boiling point and evaporation

Answer 4

Boiling Point
- All the particles in the liquid have the energy to become a gas
- The liquid boils only when heated

Evaporation
- Particles on the surface of the liquid change into a gas
- occurs at any temperature

Question 5

Name two properties of gases

Answer 5

• Takes up space
• Has mass